CATH Classification

CATH Clusters

Superfamily 2.40.50.150
Functional Family DNA-directed RNA polymerase subunit B

Enzyme Information

2.7.7.6
DNA-directed RNA polymerase.
based on mapping to UniProt P08518
Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
-!- Catalyzes DNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time. -!- Can initiate a chain de novo. -!- In eukaryotes three forms of the enzyme have been distinguished on the basis of sensitivity of alpha-amanitin, and the type of RNA synthesized. -!- See also EC 2.7.7.19 and EC 2.7.7.48.

UniProtKB Entries (1)

P22139
RPAB5_YEAST
Saccharomyces cerevisiae S288c
DNA-directed RNA polymerases I, II, and III subunit RPABC5

PDB Structure

PDB 3S1R
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Initiation complex structure and promoter proofreading.
Liu, X., Bushnell, D.A., Silva, D.A., Huang, X., Kornberg, R.D.
Science